57.2 in the Voo Doo

[David]

I finally did something to make my Voo Doo faster. It was funny how the GPS kept reading the same for a few years. DAH sent me a 12.25 X 23" SRX before my vacation last week.

Old prop, 51.1 mph into the rev limiter.
New prop, 57.2 mph, maybe close to the rev limiter.

It was too windy and rough both times I tried for top speed. The boat is very flighty over waves and not so directionally stable in cross winds. I sure wasn't looking at the tach much.

The SRX needs a lot more trim and carries the bow higher than my old Merc round ear. The price of 6 mph is stability and $375 including shipping.

Another few tenths might be possible, maybe even a mph.

[voodoos_rock]

Awsome i only got 54mph out of my voodoo with a 20 ss quicksilver prop not sure of the model

[Ilovespeed]

got 70.44 out of mine today:D hoping to get more by the end of the week

Its amazing the difference in props make.
My 12x23 DAH cleaver --- 6400 RPM GPS 70.44
versus
Titus 12.5x23 cleaver --- 7000 RPM GPS wednesday

David Im glad you found that extra speed you were looking for, I hope you can hit 60!
Tyler

[voodoos_rock]

got 70.44 out of mine today:D hoping to get more by the end of the week

Its amazing the difference in props make.
My 12x23 DAH cleaver --- 6400 RPM GPS 70.44
versus
Titus 12.5x23 cleaver --- 7000 RPM GPS wednesday

David Im glad you found that extra speed you were looking for, I hope you can hit 60!
Tyler
MAN WHAT MOTOR DO U HAVE?

[Little Jon]

Darrel you think you have enough Voo Doo's?!?

[David]

Tyler, what engine, what set back, and how high is your engine?

My motor is bolted as high as it will go, and that is about 2" below the pad. Maybe I need to try mine in calm water, but I think it would be undrivable at 70. Does raising the engine further help the stability?

[Juggernaut]

the voodoo's length, 13' 4", and an approximate hull weight of 260 lbs.
because of the voodoo's light weight, blowover is a very real possibility, even at 60mph. a prop shaft height of 1.5" below the pad is best for overall use. the boat is faster at higher heights, but at the expense of planing, safety, etc...
somebody once had a specially built mini voodoo. hull weight was 138 lbs. with a 40hp motor, he reached a top speed of 60mph!

[Juggernaut]

got 70.44 out of mine today:D hoping to get more by the end of the week

Its amazing the difference in props make.
My 12x23 DAH cleaver --- 6400 RPM GPS 70.44
versus
Titus 12.5x23 cleaver --- 7000 RPM GPS wednesday

David Im glad you found that extra speed you were looking for, I hope you can hit 60!
Tyler got pictures?

[Ilovespeed]

ok guys, i was gonna wait till tomorrow to get the final pictures and speeds (running the titus on GPS tomorrow) but I'll let you know how its going...

Ive got a production VOO DOO, full floor and interior other than a single bucket seat swapped for the bench seat. I havent modified the pad YET. Thinking I might do that this winter (or rather get someone to do it). Im running a 'High Jacker' 5 or 6 inch jackplate. Its on the highest mounting hole and its up about another few inches (ill post some pictures tomorrow/thursday to show the detail of where its at)

Ok enough about the boat...

Im running an 'illegal' SST-60 powerhead which means the blocks size was cut down more than the legal amount, or something along those lines, so its a waste for someone running sst-60. Having a legal motor is a hard thing to get and because they dont make them anymore its probably good to keep them in the class. They are pretty expensive too, the legal ones. Im running a Nitro gearcase with a lengthened driveshaft to fit onto my longshaft midsection. This way I didnt have to modify my transom and I have trim as well. Its kind of ugly right now, an old cowl a purple(faded blue) mid and a green gearcase, I have an old beat up SST-60 cowl on it right now although I had a new one made and airbrushed as a Johnson SST-60 cowl, it looks amazing,im also redoing the old cowl into a Evinrude one. Im going to paint the mid black and Im thinking of getting a nosecone LWP on the nitro lower.

Setup - Im running about an inch below the pad. Depends on the wheel im running. The DAH likes to be a little lower where the Titus (a friends prop, mercman) likes to be up a little higher. I dont like to run to high because of the water pressure issue. Maybe next year I will be able to run higher if I get the LWP although I have found that around half an inch to an inch below gets me the best performance with the cleavers im running. Its good acceleration and good top end. Ive never run it without the set back but from the people who knows these boats ive heard set back is good.

Driving - David, I find that my boat will go a few mph less in calm water. It is a little easier to drive but when I got 70 mph out of mine it was in the chop, about 6-12" of chop. Running into the wind can get a little crazy but running with the wind its a breeze (no pun intended) you pretty well just skip across the waves and you can fly the boat pretty high. Im not sure whether raising the motor helped with stability, anytime you get these boats on the pad it gets rather nuts, you definitly dont want to overtrim ive had mine start lifting up and it gets your heart beating, I dont really want to blow mine over.

I will get some running pictures tomorrow my dads bringing his good camera and ill get some good action shots.

David hope to see some pictures of yours as well at speed. Next year Im thinking im going to hit some events so maybe we will meet up.


Tyler

[Ilovespeed]

Darrel, my family used to have a cottage on Shadow from '87 to around '01, it was on road #6 in a large shallow bay with a large rock we called seagul rock directly out from the bay, good memories on shadow lake! We still have friends with a cottage in the lower part of Shadow. We're now on Stoney Lake near peterborough.

Tyler

[Ilovespeed]

couldnt get the GPS as my neighbour wasnt up at his cottage, hopefully tomorrow... got some (well a TON) pictures ...

[Ilovespeed]

at speed - how much is in the water - more speed

[Ilovespeed]

my beautiful colour scheme/DAH prop - titus prop - full package

[Forkin' Crazy]

Well, it looks good! The engine is level and the boat is at a nice attitude! :cool: Be safe!

[150aintenuff]

looks good...... 70 is nuts.. you got her dialed...

[Ilovespeed]

Tried the titus with a few different heights and couldnt get it to run faster than 70. Must be less pitch than 23, its a 'variable' pitch prop so that probably has something to do with it. Might as well stick with the 70 MPH at 6400 the motor will last longer although after a little freshin' up this winter should be a little stronger maybe be able to rev my 23" cleaver faster than 6400.
Tyler

[OntarioStreamin]

Looks good!

I love voo doos!

[Hounddog]

Tyler, I got a call from Howie Stuart to-day. He can do your nose cone. His new number is [1] 905 294-1070 Weber's Marineland

[David]

I tried mine again on Saturday. Typical for Cooch, it was calm when we went for gas... When we got back with gas (OK, we stopped for fries) and put the boat in, it was nasty for a 13' boat. I ran out of stupidity at 56, and called it a day for top speed. 70 = oh my.

[Ilovespeed]

Hounddog, thanks will give him a call here soon.

David - Do you have any pictures of your prop?

Tyler

[Juggernaut]

so tyler, just how much horsepower does your voo-doo have? just curious as to what it takes to make a 13 ft boat go 70

[DoktorC]

so tyler, just how much horsepower does your voo-doo have? just curious as to what it takes to make a 13 ft boat go 70

LOTS :)

A good freind of mine had a Voodoo with a 650xs that ran 69...that engine made around 100hp give or take...My brother's with a 90 Yami and no setup ran 66 on the limiter with a 24 Yamaha drag(no cone, no lift and a HUGE lower).


AND..it takes some doing to get one of these boats to actually blow over..they tend to blow 180 and keep the bottom down..

[Ilovespeed]

Not sure on how much horsepower I have. It was raced in SST-60 a few years ago by Paul Hickey. It is an 'illegal' block, which is how I got it.Blowing over is a possibility if your not careful, although its easy to feel it coming and you can adjust accordingly. You get a real flighty feeling with too much trim and the front end starts to rise slowly, slowly enough that you can trim down or let off the gas. Ive hooked it a few times coming down from some boats wakes, you get a few good G's when you do that.

Tyler

[DoktorC]

There's a Video of Tucker doing a 180 blowover somewhere...He was running down the river into the wind, then alot of spray, then he's running in the opposite direction...I've done it once..not the nicest sensation...but a fun story lol.

[OntarioStreamin]

Hows the new boat comming along?

[David]

I saw the video of the Voo Doo blowing over at the Toronto boat show around 1987. Of course that made me want one. It took until 2001 before I finally bought a 1987 Voo Doo. Don Tucker thinks it could have been the photo boat for the original brochure. How many white w/red trim Voo Doos were rigged with Nissans? More than one?

Tyler, pm me your e-mail I can send you photos of my 23 SRX. I lost my link to re-size photos. My 20" dumbo is attached. Ron Hill told me it is an old 650XS prop. Its a great prop, but just not big enough.

Mark Casper's Voo Doo was a 69 mph boat. It had a 650XS with low compression pistons and a long shaft lower unit. I doubt it made much more than 70 HP propshaft. My theory is set up is everything on these boats. Small lower units & small diameter props. And driving.

[David]

Chris, I will be up this weekend.

[Ilovespeed]

How do you get these motors dynoed? I would like to see how much HP I have after it gets freshined up this winter. Im going to get a nosecone and start playing around with higher set up next year ... Also going to get the boat checked out as its 15 years old. Hopefully the transom and floor are good. There are a few chips in the bottom which Im going to get fixed. Im also going to get the bottom looked at. It doesnt have that much of a hook in it from what I can see. I know modifying the bottom is a long process and I dont think that its gonna happen yet. My goal is 75, we'll see what happens.

Tyler

[DoktorC]

David - Mark Casper's boat used to belong to a good freind of mine and I'm 100% positive that it made more then 70hp. It really didn't have much time into the setup (I was there). Maybe we were lucky and nailed it first try lol. That boat now belongs to a different freind sans the 650. It's amazing the difference..it now runs a mostly stock 65 and runs like 57-58.

Streamin' - it's coming SLOWLY...we're in the middle of our race season (snowmobile grass drags) so I'm busy with sleds for the next little while. I thought I'd have it wet for this weekend lol...still doesn't have the deck attached!!

[voodoos_rock]

Darrel, my family used to have a cottage on Shadow from '87 to around '01, it was on road #6 in a large shallow bay with a large rock we called seagul rock directly out from the bay, good memories on shadow lake! We still have friends with a cottage in the lower part of Shadow. We're now on Stoney Lake near peterborough.

Tyler
Awsome there's really no one on the lake with performance boats anymore, theres me and a few chargers. My cottage is located on shadow lake road #3. The lake is kinda smaller for real high speed

[voodoos_rock]

Darrel you think you have enough Voo Doo's?!?
lol nope but now that i bought the valero i need to sell them both just the 99 voodoo with the johnson had a little problem (huge storm sank the boat :( ) so its not going to be for sale till i fix her up

[Juggernaut]

good luck.. that happened to me with my 13'. sank right at the dock. i wish i saw the look on my face when i first saw that...

[Johnny HotFoot]

good luck.. that happened to me with my 13'. sank right at the dock. i wish i saw the look on my face when i first saw that...

My 13 takes on water like a MoFo, she'd sink if I left her in the water long enough....:eek:

[Juggernaut]

i think it has something to do with the rubrail at the rear of the boat. those damn searaiders just arent sealed in the back. i have the same problem on both of mine. bilge pump keeps killin the battery. im happy ill have a new toy next spring:)

[David]

I still think set up counts more than power with Voo Doo speed.

I bought my 11 X 20 prop from Brian Scherrif (sp?) who won races using a mid 2000's 60 HP Merc. I doubt that made much more than 65 HP, even with the airbox and rev limiter removed and reeds. My 70 Nissan is probably as strong, but my set up isn't and I'm not race fast.

From an old Houndog post:

Here are some actual numbers from some of our old FE-EP- FV raceboats. The prop fellow you are thinking of was John Beer.
Very good friend of mine and he did all of our props. The props we
run to-day are still his patterns. Remember Props do wear out in time especially some of the thin blade flex style props. We only use our number one props for races and usually only the best prop for the final. Same is true for the powerheads. We do set-up testing with different powerheads than we race with. We keep running time records on all powerheads. ALL of these motors are stock.
Delta 604 lbs.. 650 XS.. 18 x 11 1/4....6947 rpm.. 68 mph
Critchfield [Lee].. 650XS..706 lbs..18 x 11 1/2..7350 rpm..74 mph
Critchfield [MB] ...70 yam.736 lbs..19 x 12..6750 rpm..69 mph
Critchfield [Danny] ..49 OMC.. 760 lbs..12 x 22.. 7200 rpm 67 mph
Trying & reworking different props is the only way you can get max. performance. IT TAKES ALOT OF TIME! In every case we picked up at least 5 mph. The hardest one was the Yamaha.
It took 1 year to get from 63 mph to 69 mph. The driver has to have talent to run one of these in the low 70's. Most boats in this class run below 64 mph. The be competitive you needed to run 66 to 68 mph. On the racecourse. That way you average 60 mph.

[DoktorC]

I totally agree!!! However, horsepower makes it easier and compensates for some sloppy setup. I'm not saying that Marks boat (which ran 69 when he bought it) was set up well...it just didn't have alot of time and certainly no special propping (the stock beat-up 18p merc chopper). I know my brother's with the 90 Yami would have run low 70's with a gearcase and a prop no problem...all costing more then the upgrade to his Talon lol.

I always wanted one of John's props on my Voodoo but could never afford it...I actually met him and talked to him for awhile at the boat show. I thought he was a great guy for talking to some kid (with no money lol) for so long.